P1119 Code: Meaning, Symptoms, Causes & Fix

Overview

Symptoms

• longer braking intervention
• ABS/traction light on
• chassis warning indicator

Common causes

• Broken terminal inside harness affecting manifold absolute temperature circuit high input
• Open circuit in wiring
• Connector pin damage/corrosion or harness stress near related components

How to diagnose P1119

1. Confirm P1119 and capture freeze-frame data with a professional scan tool.
2. Inspect wiring, connectors, and grounds related to manifold absolute temperature circuit high input for obvious defects.
3. Use a continuity test from module pin to component to identify opens/high resistance.
4. Check for related DTCs to identify the root-cause chain before replacing parts.
5. After repair, clear codes and confirm readiness monitors complete without recurrence.

Severity of code P1119

Moderate: This code is moderate severity: the vehicle may still operate, but fault progression can increase repair cost over time.

Can you drive with P1119?

Most vehicles can be driven short-term with P1119, but postpone heavy load/highway driving until repaired.

If the warning lamp is flashing or drivability/safety is affected, avoid driving and diagnose immediately.

How to fix it (step-by-step)

1. Repair obvious wiring/connector faults first to prevent repeat parts replacement.
2. Address the root fault mode (open) in the manifold absolute temperature circuit high input circuit/system.
3. Apply the required relearn/adaptation procedure if specified by service information.
4. Road-test and verify P1119 remains cleared under the conditions that originally set the code.

Fix options

• Restore continuity and verify pin tension.
• Repair open circuit and secure connector lock.
• Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$240-$1200

Common mistakes when diagnosing P1119

• Replacing parts without verifying voltage, ground, and signal integrity first.
• Ignoring related stored/pending codes that indicate upstream faults.
• Skipping post-repair verification drive cycle and readiness checks.

P1119 in common vehicles

P1119 appears across makes such as Ford, Toyota, Honda, Chevrolet. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.

Frequently asked questions

What causes P1119?

P1119 is commonly set by open faults affecting manifold absolute temperature circuit high input.

How much does it cost to fix P1119?

For P1119, repair costs are typically $240-$1200 depending on exact root cause, labor rates, and part quality.

Can I clear P1119 without repair?

You can clear P1119 temporarily, but the code usually returns until the underlying fault is corrected.

Helpful tools

• Estimate repair cost
• Decode your VIN
• Calculate fuel cost